JP5130285B2 - Screw element - Google Patents
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- JP5130285B2 JP5130285B2 JP2009501912A JP2009501912A JP5130285B2 JP 5130285 B2 JP5130285 B2 JP 5130285B2 JP 2009501912 A JP2009501912 A JP 2009501912A JP 2009501912 A JP2009501912 A JP 2009501912A JP 5130285 B2 JP5130285 B2 JP 5130285B2
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- 238000004898 kneading Methods 0.000 claims description 98
- 239000000463 material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 210000004513 dentition Anatomy 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
- B29B7/421—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with screw and additionally other mixing elements on the same shaft, e.g. paddles, discs, bearings, rotor blades of the Banbury type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/256—Exchangeable extruder parts
- B29C48/2564—Screw parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
本発明は、請求項１の上位概念部に記載したスクリューエレメントに関する。 The present invention relates to a screw element described in the superordinate conceptual part of claim 1.
スクリュー押出機又は射出成形機において設けられているような可塑化ユニットでプラスチックを処理する場合、種々異なる方法（処理若しくはプロセス）が用いられる。このような方法のうちの１つは、コンパウンディング（混成）である。つまり、充填材又は補強材の混合、塗料又は顔料の処理、種々異なる材料例えばプラスチック又はエラストマーの混合、反応性プロセス等である。すべての方法は、同方向又は逆方向で回転するスクリューを有する２軸又はそれ以上の軸を有する押出機によって行われる。可塑性材料を溶融させるために、スクリューによって剪断エネルギーが材料内にもたらされる。スクリューはいわゆる複数のスクリューエレメントを有しており、これらのスクリューエレメントは、しばしば多条スクリューとして構成されている。 When processing plastics with plasticizing units such as those provided in screw extruders or injection molding machines, different methods (processing or processes) are used. One such method is compounding. That is, mixing fillers or reinforcing materials, treating paints or pigments, mixing different materials such as plastics or elastomers, reactive processes and the like. All methods performed by an extruder that having a two-axis or more axes having screws rotating in the same direction or opposite direction. In order to melt the plastic material, shear energy is brought into the material by the screw. The screw has a so-called plurality of screw elements, and these screw elements are often configured as multi-threaded screws.
特別なスクリューエレメントはいわゆる混練エレメント（混練ブロック;Knetblockとも称呼されている）である。このような混練エレメントは、螺旋状の複数のスクリュー部又は、所定の幾何学形状を有する、処理方向で相前後して配置された複数の混練ユニットより成っている。公知の混練エレメントにおいては、混練ユニットの幾何学形状は、特にその幅及びその外径及び内径が同じであって、可塑化ユニットの大きさに従って、つまり押出機又は射出成形機の可塑化ユニットの大きさに従って選定されている。 The special screw element is a so-called kneading element (also called a kneading block; Knetblock). Such a kneading element is composed of a plurality of helical screw portions or a plurality of kneading units having a predetermined geometric shape and arranged one after the other in the processing direction. In known kneading elements, the geometry of the kneading unit, in particular its width and its outer diameter and inner diameter, is the same and depends on the size of the plasticizing unit, ie of the plasticizing unit of the extruder or injection molding machine. Selected according to size.
駆動装置、伝動装置及びスクリュー軸を介する、機械的エネルギーの損失は、例えば処理しようとするプラスチックのエンタルピーに関連して、使用されたスクリュー構造の種類によって規定される。使用されたスクリュー構造の型式は、システム構成とも称呼される。システム構成は、例えば混練ブロック及びその他のスクリューエレメントの型式及び数が異なっている。 The loss of mechanical energy via the drive, transmission and screw shaft is determined by the type of screw structure used, for example in relation to the enthalpy of the plastic to be processed. The type of screw structure used is also referred to as the system configuration. The system configuration differs, for example, in the type and number of kneading blocks and other screw elements.
特に、単数又は複数の第１の混練エレメントの直前で、並びに直ぐ上で、スクリューエレメントの幾何学形状に応じてエネルギーの主な変換が行われる。このようなエネルギーの主な変換は、剪断によって発生する。この場合、主に、スクリューの回転数及びひいては混練ユニットの（角）速度が、混練ユニットと押出機ケーシングとの間のギャップ、並びに２軸式スクリュー押出機においては、三角隅壁領域の混練ユニット、混練エレメントの歯列面が規定されている。これらの値から、剪断速度も剪断応力も算出することができる。剪断応力を介して、可塑化しようとする材料の溶融が得られる。溶融の際に、スクリューエレメント及びその軸／ハブ結合部のための最大の機械的負荷が得られる。 In particular, the main conversion of energy takes place according to the geometry of the screw element, immediately before and immediately above the one or more first kneading elements. This major energy conversion occurs by shear. In this case, mainly the rotation speed of the screw and hence the (angular) speed of the kneading unit is the gap between the kneading unit and the extruder casing, and in the twin screw extruder, the kneading unit in the triangular corner wall region. The dentition surface of the kneading element is defined. From these values, both the shear rate and the shear stress can be calculated. Through the shear stress, melting of the material to be plasticized is obtained. Upon melting, the maximum mechanical load for the screw element and its shaft / hub connection is obtained.
このような混練エレメントは、ドイツ連邦共和国実用新案登録第８２３２５８５号明細書により公知である。この公知のスクリューエレメントは個別の混練ユニットを有しており、これらの混練ユニットは個別に１つの混練エレメントにまとめられる。この場合、混練ユニットは同じ幾何学形状を有している。 Such a kneading element is known from German utility model registration No. 8232585. This known screw element has individual kneading units, which are individually combined into one kneading element. In this case, the kneading units have the same geometric shape.
ドイツ連邦共和国特許公開第１００５０２９５号明細書によれば、充填材と混合されるエラストマーを処理及び／又は加工するための、少なくとも２つの軸を有する多軸式押出機について記載されている。これら２つの軸は、搬送方向で見て、充填ゾーンと、素練りゾーン（Mastifizierzone）と、分散ゾーン（Dispergierzone）とを有している。この場合、素練り区分も分散区分も、混練ディスクを有しており、この混練ディスクの最大直径は、製造方向で増大又は減少している。 German Offenlegungsschrift 100 50 295 describes a multi-screw extruder having at least two shafts for processing and / or processing an elastomer mixed with a filler. These two shafts have a filling zone, a masticating zone (Mastifizierzone), and a dispersion zone (Dispergierzone) when viewed in the conveying direction. In this case, both the kneading section and the dispersion section have a kneading disk, and the maximum diameter of the kneading disk increases or decreases in the production direction.
特開２００４−２０２８７１号公報の要約によれば、混練押出機用のスクリューについて記載されており、この混練押出機用のスクリューは、フィード部と押出部との間に混練部を有しており、この混練部の混練ディスクは、搬送方向に連続的に次第に大きくなる直径を有している。 According to the summary of JP 2004-202871, a screw for a kneading extruder is described, and the screw for a kneading extruder has a kneading part between a feed part and an extrusion part. The kneading disk of this kneading section has a diameter that increases continuously in the conveying direction.
ドイツ連邦共和国特許公開第１９９５０９１７号明細書によれば、良好な混合作用が得られ、しかも温度上昇の損失ができるだけ少ない所定のスクリューエレメントを備えた２軸式スクリュー押出機について開示されている。この場合、明細書には、単にスクリューエレメントが連続的なリード角（ねじれ；Verdrehung）を有しているか、又はピッチが無限である（ねじれなし）か又は角度が所定にずらされて配置されている（いわゆる混練ブロック）、幅の可変なディスクにも、スクリューエレメントを設けることが、という点について言及されているだけである。 German Offenlegungsschrift 19 509 917 discloses a twin-screw extruder having a predetermined screw element that provides good mixing action and minimizes the loss of temperature rise. In this case, the description simply states that the screw element has a continuous lead angle (twisting), or the pitch is infinite (no twisting) or the angle is shifted by a predetermined amount. (So-called kneading block), it is only mentioned that a screw element is also provided on a disk of variable width.
そこで本発明の課題は、冒頭に述べた形式のスクリューエレメントを改良して、処理しようとする材料を良好に可塑化することができ、しかもスクリューエレメントの機械的な負荷が減少されるようなものを提供することである。 The object of the present invention is therefore to improve the screw element of the type mentioned at the outset so that the material to be processed can be plasticized well and the mechanical load on the screw element is reduced. Is to provide.
この課題は、請求項１に記載した特徴を有するスクリューエレメントによって解決された。 This problem has been solved by a screw element having the features described in claim 1.
本発明のスクリューエレメントによれば、互いに相前後して配置された少なくとも２つの混練ユニットの幾何学形状が異なっており、この場合、混練ユニットの幅は処理方向（Verfahrensrichtung）で次第に増大している。 According to the screw element of the present invention, the geometric shapes of at least two kneading units arranged one after the other are different, in which case the width of the kneading units gradually increases in the processing direction (Verfahrensrichtung). .
従って、少なくとも２つの混練ユニットの幅は異なっていてよい。これによって、剪断ギャップは影響を受け、剪断面が変えられる。同様に、混練ユニットの直径が変化する場合（以下に説明されている）におけるように、これは単数又は複数の互いに相前後するスクリューエレメント内で行われる。混練ユニット又はスクリュー部は、スクリューエレメントの幅全体に亘って一貫して同じ幅を有してはいない。しかも、混練ユニット又はスクリュー部の区分も、一貫して同じ直径を有してはいない。スクリューエレメントは、スクリュー内のエレメントの数とは無関係である。これによって、ディスクの幅とウエブの幅との可変性は、複数のスクリューエレメントに亘っている。従ってスクリューエレメントは長さとは無関係である。 Therefore, the width of the at least two kneading units may be different. This affects the shear gap and changes the shear plane. Similarly, as in the case where the diameter of the kneading unit changes (described below), this is done in one or more mutually adjacent screw elements. The kneading unit or screw part does not have the same width throughout the entire width of the screw element. Moreover, the kneading unit or the section of the screw part does not consistently have the same diameter. The screw element is independent of the number of elements in the screw. Thereby, the variability between the width of the disc and the width of the web is spread over a plurality of screw elements. The screw element is therefore independent of length.
混練ユニットの幅は処理方向で全体的に次第に増大している。これによって、可塑化しようとする材料の剪断も処理方向で増大する。処理方向として、可塑化しようとする、かつ／又は可塑化された材料がほぼ搬送される可塑化ユニットの方向性が規定される。しかしながら混練ユニットの幅の可変性の連続は、常に増大させる必要はなく、部分的には同じであってよい。 The width of the kneading unit gradually increases overall in the processing direction. This also increases the shear of the material to be plasticized in the process direction. The processing direction defines the direction of the plasticizing unit to be plasticized and / or to which the plasticized material is substantially conveyed. However, the continuity of the variability of the width of the kneading unit does not always have to be increased and may be partly the same.
スクリューエレメントの機械的な負荷が減少され、しかも良好な可塑化を得るために、混練ユニットの同じ幾何学形状の公知の形状とは異なっていてよいことが分かる。混練ユニットにおいて種々異なる形状を選択すれば、つまり異なる幅を選択すれば、剪断及び機械的な負荷の導入をコントロールし、かつそれぞれの処理を最適化することが可能である。 It can be seen that the mechanical load of the screw element can be reduced and different from the known shape of the same geometric shape of the kneading unit in order to obtain good plasticization. If different shapes are selected in the kneading unit, that is, if different widths are selected, it is possible to control the introduction of shearing and mechanical loads and to optimize each treatment.
本発明によるスクリューエレメントは、多くの可塑化ユニット及び異なる処理に使用することができる。本発明による混練エレメントは、２軸式又は多軸式の、同回転方向又は逆回転方向で回転する可塑化ユニットにおいて考えることができる。スクリューエレメントが単条又は多条に構成されていて、螺旋状の混練部より成っているか、又は一体的に構成されていて、又は互いにルーズに結合された混練ユニットより成っていてもよい。混練ユニットは、可塑化ユニットの大きさ及びそれぞれの処理の課題に基づいて選択される。従って、混練エレメントの本発明による構成は、機械の大きさ及びスクリューエレメントの直径とは無関係である。さらにまた、スクリューエレメントは、軸／ハブ結合の型式、並びにスクリューエレメントの機能状態とは無関係である。さらにまた、スクリューエレメントは、どのような種類の、可塑化しようとする材料も使用することができ、Ｄａ／Ｄｉ比並びにスクリューの回転方向とは無関係である。 The screw element according to the invention can be used in many plasticizing units and in different processes. The kneading elements according to the invention can be considered in biaxial or multiaxial plasticizing units that rotate in the same or reverse direction. The screw element may be composed of a single or multiple strips, may be composed of a spiral kneading section, may be constructed integrally, or may be composed of kneading units that are loosely coupled to each other. The kneading unit is selected based on the size of the plasticizing unit and the respective processing issues. The configuration according to the invention of the kneading element is therefore independent of the size of the machine and the diameter of the screw element. Furthermore, the screw element is independent of the type of shaft / hub connection and the functional state of the screw element. Furthermore, the screw element can use any kind of material to be plasticized and is independent of the Da / Di ratio as well as the direction of rotation of the screw.
特に有利な形式で、混練ユニット幾何学形状は、可塑化しようとする材料の剪断が連続的に得られるように、構成されている。これは、剪断の導入が大規模に突然行われるのではなく、滑動的に例えば次第に増大するように行われる、という点で特に有利である。機械的には、このような実施態様は特に有利である。何故ならば、エレメントの負荷は、局所的かつ暴力的に狭く限定された領域で行われるよりは、むしろ比較的長い行程に亘って次第に増加するからである。 In a particularly advantageous manner, the kneading unit geometry is configured such that a continuous shear of the material to be plasticized is obtained. This is particularly advantageous in that the introduction of shear is not carried out suddenly on a large scale, but in a slidable manner, for example gradually. Mechanically, such an embodiment is particularly advantageous. Because the load elements are than carried out in areas that are locally and violently narrowly, it is gradually increased to Luke et al rather over a relatively long stroke.
前述のように、少なくとも２つの混練ユニットの直径も異なっていてよい。これによって、混練ユニットと押出機との間に形成される剪断ギャップは、処理方向で大きく又は小さく構成される。有利な形式で、各混練ユニット又は混練ユニットの区分の直径は、処理方向で次第に大きくなる。この場合、混練ユニット並びに相前後して配置された混練エレメントは、一貫して異なる直径を有していてよい。 As mentioned above, the diameter of the at least two kneading units may also be different. Thereby, the shear gap formed between the kneading unit and the extruder is configured to be large or small in the processing direction. In an advantageous manner, the diameter of each kneading unit or section of kneading units becomes progressively larger in the process direction. In this case, the kneading units as well as the kneading elements arranged one after the other may have different diameters consistently.
しかしながら、直径の連続は、必ずしも次第に大きくなるように構成されなくてもよく、部分的に同じであるか又は小さくてもよい。この場合、直径の可変性は、種々異なるスクリューエレメントに亘っている。 However, the continuity of diameter does not necessarily have to be configured to become progressively larger and may be partially the same or smaller. In this case, the variability in diameter spans different screw elements.
処理方向で見て混練ユニットの直径が大きくなる場合、エラストマーの機械的な負荷は、より長い区分に亘って次第に大きくなるように行われる。混練ユニットの直径の可変性の連続は、常に大きくなるようにする必要はなく、部分的に同じであるか又は減少している。 When the diameter of the kneading unit increases in the process direction, the mechanical load of the elastomer is increased gradually over a longer section. The variability series of kneading unit diameters does not have to always be large, but is partly the same or reduced.
これによって幾何学形状の可変性は、スクリューエレメントの前及び内部における剪断速度の展開に直接的な影響を及ぼし、またエレメントの機械的な負荷の展開に直接的な影響を及ぼす。さらに、混練ユニットのＤａ／Ｄｉ比は、本発明によるスクリューエレメントにおいて一定であるか、又は変化する。 Thereby, geometry variability has a direct influence on the development of the shear rate in front and inside of the screw element and also directly on the development of the mechanical load of the element. Furthermore, the Da / Di ratio of the kneading unit is constant or varies in the screw element according to the invention.
有利な実施態様によれば、少なくとも２つの混練ユニットの直径及び幅は、異なっていてよい。これによって、剪断ギャップの特に大きい可変性が得られる。このようにして構成されたスクリューエレメントは、同様に、種々異なる処理の課題に特に良好に適合可能である。 According to an advantageous embodiment, the diameter and width of the at least two kneading units can be different. This gives a particularly large variability in the shear gap. Screw elements constructed in this way can likewise be particularly well adapted to different processing challenges.
剪断の特に良好な導入の枠内で、及び剪断エレメントの測定された負荷に関連して、混練ユニットの直径も幅も、処理方向で次第に増大するようになっていてよい。 Within the framework of a particularly good introduction of shear, and in connection with the measured load of the shear element, the diameter and width of the kneading unit may also increase gradually in the process direction.
本発明の有利な実施例及び実施態様の種々異なる可能性が考えられる。このために、請求項１に続く従属請求項、及び以下の図面を用いた本発明の混練エレメントの有利な実施例の説明が参照される。図面に示した、本発明による混練エレメントの有利な実施例の説明を用いて、以下に本発明の有利な実施例及び実施態様について説明する。 Different possibilities of advantageous embodiments and embodiments of the invention are conceivable. For this purpose, reference is made to the dependent claims following claim 1 and to the description of advantageous embodiments of the kneading element of the invention using the following figures. With reference to the description of advantageous embodiments of the kneading element according to the invention shown in the drawings, advantageous embodiments and embodiments of the invention will be described below.
図１は、可変な直径を有する混練エレメントの実施例の概略的な平面図、
図２は、可変な直径を有する混練エレメントの、図１に示した実施例の概略的な側面図、
図３は、混練ユニットの可変な幅を有する本発明の１実施例による混練エレメントの概略的な平面図、
図４は、図３に示した、混練ユニットの可変な幅を有する本発明の１実施例による混練エレメントの概略的な側面図である。
FIG. 1 is a schematic plan view of an embodiment of a kneading element having a variable diameter,
2 is a schematic side view of the embodiment shown in FIG. 1 of a kneading element having a variable diameter,
FIG. 3 is a schematic plan view of a kneading element according to one embodiment of the invention having a variable width of the kneading unit,
FIG. 4 is a schematic side view of the kneading element according to one embodiment of the present invention having a variable width of the kneading unit shown in FIG.
図示の実施例では、スクリューエレメントは混練エレメント１である。この混練エレメント１は、図示していないスクリュー軸を備えた同様に図示していない可塑化ユニットに使用するためのものである。 In the illustrated embodiment, the screw element is a kneading element 1. The kneading element 1 is for use in a plasticizing unit (not shown) having a screw shaft (not shown).
混練エレメント１は複数の混練ユニット２より構成されており、これらの混練ユニット２は、図示の実施例では互いに堅固に結合されている。混練ユニット２は、１つの共通の軸上に配置することができる。このために、混練ユニット２は歯列を有しており、この歯列は、スクリュー軸に形成された歯列と噛み合い、それによって混練エレメントはスクリュー軸にほぼ相対回動不能に固定される。混練ユニット１２は、２つの直径Ｄｉ及びＤａによって、つまり直径Ｄ１若しくはＤ２，Ｄ３又はＤ４によって規定された幾何学形状を有している。 The kneading element 1 is composed of a plurality of kneading units 2, and these kneading units 2 are firmly connected to each other in the illustrated embodiment. The kneading unit 2 can be arranged on one common axis. For this purpose, the kneading unit 2 has a tooth row which meshes with a tooth row formed on the screw shaft, whereby the kneading element is fixed to the screw shaft almost non-rotatably. The kneading unit 12 has a geometric shape defined by two diameters D i and D a , ie by diameters D 1 or D 2 , D 3 or D 4 .
この場合、相前後して配置された２つの混練ユニット２の幾何学形状は異なっている。図１に示した混練エレメントにおいては、外径Ｄａが処理方向で増大している。つまり、この実施例では最小の直径Ｄ１を有する混練ユニット２が搬入ゾーンの方向で最も近い所に配置されていて、外径Ｄ４を有する混練ユニット２が、搬出ゾーンの方向で最も遠くに配置されている。つまり、図示の実施例では、外径Ｄ４は外径Ｄ３よりも大きく、外径Ｄ３は外径Ｄ２よりも大きい。外径Ｄ１は外径Ｄ２よりも小さい。即ちＤ１＜Ｄ２＜Ｄ３＜Ｄ４である。この場合、混練エレメント１の内径Ｄｉは一定である。どのような構成においても、内径Ｄｉが相応に、又は外径Ｄａとは異なって可変であることが考えられる。 In this case, the geometric shapes of the two kneading units 2 arranged one after the other are different. In the kneading element shown in FIG. 1, the outer diameter Da increases in the processing direction. In other words, the kneading unit 2 with the smallest diameter D 1 in this embodiment has been arranged at the nearest in the direction of the loading zone, kneading unit 2 with an outer diameter D 4 is farthest in the direction of the unloading zone Has been placed. That is, in the illustrated embodiment, the outer diameter D 4 is greater than the outer diameter D 3, the outer diameter D 3 is larger than the outer diameter D 2. The outer diameter D1 is smaller than the outer diameter D2. That is, D 1 <D 2 <D 3 <D 4 . In this case, the inner diameter D i of the kneading element 1 is constant. In any configuration, it is conceivable that the inner diameter Di is variable correspondingly or different from the outer diameter Da.
図２は、図１に示した混練エレメント１の概略的な側面図を示す。この実施例の混練エレメント１は全幅Ｂを有している。混練ユニット２自体は幅ｂを有している。 FIG. 2 shows a schematic side view of the kneading element 1 shown in FIG. The kneading element 1 of this embodiment has a full width B. The kneading unit 2 itself has a width b.
図３は、可変なウエブ幅を備えた本発明による混練エレメントを示す。つまり混練ユニット２は異なる幅ｂを有している。この実施例では、直径比Ｄａ／Ｄｉは一定である。さらに、外径Ｄａが同様に一定であることを考慮する必要がある。混練ユニット２の幅ｂは、処理方向で次第に増大している。これによって、混練エレメント１の幅Ｂに亘っての材料の剪断は高められる。この具体的な実施例では、この混練エレメント１において搬入ゾーンに向かう方向で最も近くに配置された混練入ニット２の幅ｂ１は、幅ｂ２よりも小さい。また幅ｂ２は幅ｂ３よりも小さい。隣の混練ユニット２の幅ｂ４は、すぐ前の混練ユニット２の幅ｂ３よりも大きい。また、この混練ユニット２に関連して搬出ゾーンの方向で最も遠い位置に配置された混練ユニット２の幅ｂ５は、幅ｂ４よりも大きい。つまりｂ１＜ｂ２＜ｂ３＜ｂ４である。 FIG. 3 shows a kneading element according to the invention with a variable web width. That is, the kneading unit 2 has a different width b. In this embodiment, the diameter ratio D a / D i is constant. Furthermore, it is necessary to consider that the outer diameter Da is also constant. The width b of the kneading unit 2 gradually increases in the processing direction. This increases the shear of the material over the width B of the kneading element 1. In this specific embodiment, the width b 1 of the kneading-in knit 2 arranged closest in the direction toward the carry-in zone in the kneading element 1 is smaller than the width b 2 . The width b2 is smaller than the width b3. The width b4 of the adjacent kneading unit 2 is larger than the width b3 of the immediately preceding kneading unit 2. The width b5 of the kneading unit 2 disposed farthest in the direction of the unloading zone in connection with the kneading unit 2 is greater than the width b4. That is, b1 <b2 <b3 <b4.
その他の詳細については、繰り返しの説明を避けるために共通の説明を参照されたい。 For other details, please refer to the common description to avoid repeated description.
以上記載した実施例は、本発明の詳細を説明するためだけのものであって、本発明の図示の実施例に限定されるものではない。 The embodiments described above are only for explaining the details of the present invention, and are not limited to the illustrated embodiments of the present invention.
Claims (3)
前記混練ユニット（２）の幅（ｂ）が処理方向で増大しており、かつ部分的には互いに相前後して配置された前記混練ユニット（２）の幅が同じであり、それによって、可塑化しようとする材料のための剪断力が処理方向で増大することを特徴とする、スクリューエレメント。A mixed paste elements for use in plasticizing unit having one screw shaft (1) has at least three kneading units (2), the kneading unit (2) is one common shaft In the type that can be placed on the screw shaft as
The width (b) of the kneading unit (2) increases in the processing direction , and partly the width of the kneading units (2) arranged one after the other is the same, so that Screw element, characterized in that the shear force for the material to be increased increases in the process direction .
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006014692.1 | 2006-03-28 | ||
| DE102006014692A DE102006014692B3 (en) | 2006-03-28 | 2006-03-28 | Kneading assembly for plastic and rubber compounds has two or more discrete kneading stations on a single helical spindle |
| PCT/EP2007/002482 WO2007112861A1 (en) | 2006-03-28 | 2007-03-21 | Screw element |
Publications (3)
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| JP2009531199A JP2009531199A (en) | 2009-09-03 |
| JP2009531199A5 JP2009531199A5 (en) | 2012-04-19 |
| JP5130285B2 true JP5130285B2 (en) | 2013-01-30 |
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| JP2009501912A Expired - Fee Related JP5130285B2 (en) | 2006-03-28 | 2007-03-21 | Screw element |
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| US (1) | US20090016147A1 (en) |
| EP (1) | EP2001650B1 (en) |
| JP (1) | JP5130285B2 (en) |
| CN (1) | CN101400500B (en) |
| CA (1) | CA2644925C (en) |
| DE (1) | DE102006014692B3 (en) |
| RU (1) | RU2442688C2 (en) |
| TW (1) | TWI432309B (en) |
| WO (1) | WO2007112861A1 (en) |
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| JP6198666B2 (en) * | 2014-04-22 | 2017-09-20 | 宏平 澤 | Kneading equipment |
| EP3311975A1 (en) * | 2016-10-18 | 2018-04-25 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Screw for use in an extruder and extruder |
| AU2018275182A1 (en) | 2017-06-01 | 2019-07-25 | Wenger Manufacturing Inc. | High specific mechanical energy extrusion screw assembly |
| CN109849300B (en) * | 2019-03-14 | 2024-10-29 | 舟山德玛吉实业有限公司 | Screw of injection molding machine |
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- 2006-03-28 DE DE102006014692A patent/DE102006014692B3/en not_active Expired - Fee Related
-
2007
- 2007-02-16 TW TW096105903A patent/TWI432309B/en active
- 2007-03-21 JP JP2009501912A patent/JP5130285B2/en not_active Expired - Fee Related
- 2007-03-21 WO PCT/EP2007/002482 patent/WO2007112861A1/en active Application Filing
- 2007-03-21 EP EP07711985.7A patent/EP2001650B1/en active Active
- 2007-03-21 CN CN2007800087319A patent/CN101400500B/en active Active
- 2007-03-21 RU RU2008142522/05A patent/RU2442688C2/en not_active IP Right Cessation
- 2007-03-21 CA CA2644925A patent/CA2644925C/en not_active Expired - Fee Related
-
2008
- 2008-09-16 US US12/211,410 patent/US20090016147A1/en not_active Abandoned
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| Publication number | Publication date |
|---|---|
| RU2442688C2 (en) | 2012-02-20 |
| EP2001650A1 (en) | 2008-12-17 |
| WO2007112861A1 (en) | 2007-10-11 |
| CN101400500B (en) | 2013-08-28 |
| US20090016147A1 (en) | 2009-01-15 |
| RU2008142522A (en) | 2010-05-10 |
| CN101400500A (en) | 2009-04-01 |
| JP2009531199A (en) | 2009-09-03 |
| DE102006014692B3 (en) | 2007-08-02 |
| TW200800569A (en) | 2008-01-01 |
| CA2644925A1 (en) | 2007-10-11 |
| EP2001650B1 (en) | 2016-03-16 |
| TWI432309B (en) | 2014-04-01 |
| CA2644925C (en) | 2013-10-29 |
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